ADU rules for Hilton Head Island
Accessory Dwelling Unit (ADU) Rules for Hilton Head Island, SC
Is your property eligible for an ADU?
# of Properties
19,340
Owner-occupied
59%
Zoning districts
23
Avg Home Value
$1,156,982
Median Lot Size
0.37 acres
Avg Income
$118,304
Residential Types:
19,340 housing units
Single Family
79%
Apts (4+ units)
10%
Condos
4%
Other
7%
Zoning Districts:
22,275 parcels · 23 districts
PD-1
70%(15,494)
RM-4
12%(2,599)
RSF-5
4%(893)
RM-8
4%(867)
Other
11%(2,422)
ADU Rules
What can you build in Hilton Head Island, SC?
Hilton Head Island, SC follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
Check my propertyHow can we help you?
Get matched with trusted local builders
Understand what's allowed on your property
Learn the key rules and size limits for ADUs
Is your property eligible for an ADU?
ADU rules in other South Carolina municipalities
Rules change at the town line. Check the municipality your property is actually in.
Beaufort County